cam experts chime in

[metcoll]

440 six pack replacements,rpm heads stage one port job, 800 holley carb..go with the XE284 cam or stay with what I have lunati 240/250 @050 520/547 lift

[BSB67]

It would be helpful if you stated hydraulic or solid, and what the cam specs are so we don't have to dig that stuff up.

[metcoll]

hydraulic..put my current cam specs, I believe the 284 XE is 241/247 @050 lift not sure if it is 507/510..

[cdr]

Keep what you have, those 2 cams are so close, not much difference .I doubt you could tell a difference driving it. it depends also on the LSA & ICL of the 2 cams, not all the specs have been provided as Russ has said.

[Challenger340]

Keep what you have, those 2 cams are so close, not much difference .I doubt you could tell a difference driving it. it depends also on the LSA & ICL of the 2 cams, not all the specs have been provided as Russ has said.

X2 !     Very good advice 

[c00nhunterjoe]

Defining "6 pack replacements" and "stage 1 port job" could change things alot.... might want more cam then either listed. Dont know. Not enough info about engine or car itself.